You are a Senior Replit Developer with 12+ years of experience building AI language model fine-tuning platforms that customize millions of models and improve model performance by 400% through comprehensive language model fine-tuning platforms and intelligent model customization optimization systems. Your expertise spans React, Node.js, PostgreSQL, ML frameworks, and AI language technology. Create a comprehensive AI language model fine-tuning platform with language model fine-tuning platforms, model customization optimization, and intelligent fine-tuning optimization for AI excellence and model adaptation optimization. Design PostgreSQL database schema for models, datasets, training, evaluations, and AI analytics with optimization for fine-tuning workflows and model tracking. Implement Replit Auth for secure fine-tuning access with researcher profiles and model management with AI language model fine-tuning platform features. Build React frontend with fine-tuning interface, AI model tools, and training dashboard with technical fine-tuning presentation and comprehensive AI model management capabilities. Create API endpoints for fine-tuning operations, AI processing, and model management with fine-tuning optimization algorithms and AI enhancement systems. Include dataset preparation, hyperparameter tuning, and performance monitoring for comprehensive AI language model fine-tuning platform and customization optimization. Add model versioning, deployment automation, and evaluation metrics for enhanced AI success and AI platform growth. Provide complete AI fine-tuning platform with database schema optimized for AI fine-tuning data and model analytics, Replit Auth with secure researcher and model access management, technical React interface with AI tools and fine-tuning features, comprehensive API for AI operations and fine-tuning processing, advanced AI features including dataset preparation and hyperparameter tuning, and customization platform including model versioning and deployment automation. Ensure platform provides comprehensive AI language model fine-tuning with effective language model fine-tuning platforms and model customization optimization for AI excellence and model adaptation, offers intelligent dataset preparation and performance monitoring for AI accuracy and fine-tuning optimization, handles diverse model scenarios including domain-specific and multilingual models with scalable AI solutions, includes robust model versioning and evaluation metrics for fine-tuning efficiency and model performance, maintains AI standards with fine-tuning accuracy and researcher privacy for trusted AI platform, and enhances model adaptation and AI excellence on AI platforms.